Betting calculators
The maths bookmakers do on your behalf, so you can check it yourself. Free, no signup, no email address.
Rule 4 deduction
Rule 4 calculator
Work out the deduction from a withdrawn horse's price and check your bookmaker settled the bet correctly.
“Why were my returns cut after a non-runner?”
Open calculatorClosing line value
CLV calculator
Compare the price you took against the closing price, with Rule 4 accounted for, to see whether your results come from judgement or luck.
“Did I beat the market, or did I just get lucky?”
Open calculatorEach-way returns
Each-way calculator
Work out win and place returns on the doubled outlay, and find out whether a placed selection actually made you money.
“My horse placed — so why am I down?”
Open calculatorWhy these three
They cover the three moments a settled bet stops making sense: a non-runner cut your returns, your horse placed and you still lost money, or you want to know whether a good month was skill. Each one is a calculation bookmakers perform silently, and each one is worth being able to check.
The same maths runs inside betr.pro on every bet you track — Rule 4 applied at settlement, each-way legs split correctly, and closing line value measured across your whole record rather than one bet at a time.
One bet at a time only tells you so much
A single calculation answers what happened. Tracking every bet answers whether you are actually any good — with P&L, ROI, and closing line value measured across your full record.
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